portage-ng / portage / dev-python / uv / 0.12.7
pmerge --pretend --verbose
[ebuild  NS    ] dev-lang/rust-bin-1.99.0:1.99.0::gentoo [1.94.0:1.94.0] USE="clippy rustfmt (-big-endian) -doc (-prefix) -rust-analyzer -rust-src -verify-sig" CPU_FLAGS_X86="sse2" LLVM_SLOT="(23)" 200.7 MiB
[ebuild  N     ] dev-python/uv-0.12.7::gentoo USE="-debug -test" 50.4 MiB

Total: 2 packages (1 new, 1 in new slot), Size of downloads: 251.1 MiB


 * Running sanity checks...
>>> dev-python/uv-0.12.7: failed pkg_pretend
 /Volumes/Disk 1/gentoo-prefix/usr/lib/pkgcore/lib/pkgcore/ebd/.generated/libs/8/pkg_pretend: line 144: [[: invalid regular expression `': empty (sub)expression
  * ERROR: dev-python/uv-0.12.7:: failed (pretend phase):
  *   USE flag 'debug' not in IUSE for dev-python/uv-0.12.7
  * 
  * Call stack:
  *    isolated-functions.bash, line  333:  called pkg_pretend
  *                ebuild.bash, line 1960:  called check_space
  *                ebuild.bash, line 1681:  called use 'debug'
  *                pkg_pretend, line  145:  called die
  * 
  * Working directory: '/var/tmp/portage'

!!! Sanity checks failed, exiting...

Wall time
0.765 s vs. 1.408 s for portage-ng